Hey guys, I just bought a cortez ray about six inches big. Currently I am housing it in a 175 gallon tank. Eventually it will be moved to a pond that I am preparing. Till then I was wondering what would be proper to put in the tank with it. I want to avoid shark. I was hoping to put something in that would feed on algae. There isn't much algae but enough macro algae growth to keep a grazer content. Any information would be great. Thank you.